Ac Voltage Specifications - Fluke 8845A User Manual

8845A/8846A
Users Manual
Input Characteristics
Range Resolution
100 mV 100.0000 mV
1 V 1.000000 V
10 V 10.00000 V
100 V 100.0000 V
1000 V 1,000.000 V
[1] Inputs beyond ±14 V are clamped through 200 kΩ typical. 10 MΩ is default input impedance.
8846A Accuracy
Accuracy is given as ± (% measurement + % of range)
Range
100 mV
1 V
10 V
100 V
1000 V
8845A Accuracy
Accuracy is given as ± (% measurement + % of range)
Range
100 mV
1 V
10 V
100 V
1000 V
Additional Errors
Digits
6½
6½
5½
5½
4½

AC Voltage Specifications

AC Voltage specifications are for ac sinewave signals >5 % of range. For inputs from 1 % to 5 % of range and <50 kHz,
add an additional error of 0.1 % of range, and for 50 kHz to 100 kHz, add 0.13 % of range.
Maximum Input ....................................................... 750 V rms or 1000 V peak (8845A), 1000 V rms or 1414 V peak
Measurement Method ............................................. AC-coupled true-rms. Measures the ac component of input with up to
AC Filter Bandwidth:
Slow .................................................................... 3 Hz – 300 kHz
Medium ............................................................... 20 Hz – 300 kHz
Fast ..................................................................... 200 Hz – 300 kHz
Common Mode Rejection ....................................... 70 dB at 50 Hz or 60 Hz ±0.1 % (1 kΩ unbalance)
Crest Factor Error (applies to non-sinusoidal waveforms only)
Maximum Crest Factor ....................................... 5:1 at Full Scale
1-12
4½ Digits
10 μV
100 μV
1 mV
10 mV
100 mV
24 Hour 90 Days
(23 ±1 °C) (23 ±5 °C)
0.0025 + 0.003 0.0025 + 0.0035
0.0018 + 0.0006 0.0018 + 0.0007
0.0013 + 0.0004 0.0018 + 0.0005
0.0018 + 0.0006 0.0027 + 0.0006
0.0018 + 0.0006 0.0031 + 0.001
24 Hour 90 Days
(23 ±1 °C) (23 ±5 °C)
0.003 + 0.003 0.004 + 0.0035
0.002 + 0.0006 0.003 + 0.0007
0.0015 + 0.0004 0.002 + 0.0005
0.002 + 0.0006 0.0035 + 0.0006
0.002 + 0.0006 0.0035 + 0.0010
NPLC
100
10
1
.2
0.02
Resolution
5½ Digits
1 μV 100 nV
10 μV 1 μV
100 μV 10 μV
100 μV
1 mV
10 mV 1 mV
1 Year
(23 ±5 °C)
0.0037 + 0.0035
0.0025 + 0.0007
0.0024 + 0.0005
0.0038 + 0.0006
0.0041 + 0.001
1 Year
(23 ±5 °C)
0.005 + 0.0035
0.004 + 0.0007
0.0035 + 0.0005
0.0045 + 0.0006
0.0045 + 0.0010
Additional NPLC Noise Error
0 % of range
0 % of range
0.001 % of range
0.0025 % of range +12 μV
0.017 % of range +17 μV
7
(8846A) or 8 x 10 volts-Hertz product (whichever is less) for any
range.
1000 V dc bias on any range.
Input Impedance
6½ Digits
10 MΩ or >10 GΩ
10 MΩ or >10 GΩ
10 MΩ or >10 GΩ
10 MΩ ±1%
10 MΩ ±1%
Temperature
Coefficient/ °C
Outside 18 to 28 °C
0.0005 + 0.0005
0.0005 + 0.0001
0.0005 + 0.0001
0.0005 + 0.0001
0.0005 + 0.0001
Temperature
Coefficient/ °C
Outside 18 to 28 °C
0.0005 + 0.0005
0.0005 + 0.0001
0.0005 + 0.0001
0.0005 + 0.0001
0.0005 + 0.0001
[1]
[1]
[1]